ci: add github action file to get automatic test and build execution …

…when pushing and creating a pull request to main

Closes #9

.github/workflows/actions-workflow.yml

@@ -0,0 +1,28 @@
+name: Push to main workflow
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: set up JDK 11
+        uses: actions/setup-java@v3
+        with:
+          java-version: 11
+          distribution: 'temurin'
+
+      - name: set up gradle
+        uses: gradle/gradle-build-action@v2
+
+      - name: test with gradle
+        run: ./gradlew test
+
+      - name: build with gradle
+        run: ./gradlew build